Chair back



March 12, 1935. c. c. ADELSPERGER CHAIR BACK Origin al Filed March 11,1952 INVENT OR. 67% flea 6T Adela very:

ATTORNEY5 5 in a knocked down' condition-.=

Patented Mar. 12, 1935 units-o stares CHAIR BACK Charles C.:Adelsperger,. Union: City 31nd; assignor to Union City Body Company,Union City, Ind. a a corporation oflndiana.

Original 1 application: March-.11, 1932; Serial No.

598,231; Divided and this: applicationzApril' 2, a n 1934, Serial-Not718-,594'

The present invention relates tic-improvements in theater chairs-and oneof the objects of my invention. is- 'toprovide a chair structureorganized in-such a mannerthat it may be shipped A further object of myinvention is to pro vide an improvement in a chairback, primarilyadapted. for association: with the above-mentioned type of knockedidown'chair, which may be cheaply and readily constructed; primarily of sheetmetal, with means for securing the upholstery in position. in the back,which means not only providesfor a cheap and'efii'cient manner forsecuring: the upholstery in place, but also provides means whereby theupholstery maybe renewed when worn out or destroyed with a minimum ofexpense.

For the purpose of illustrating my invention I have illustratedanembodiment thereof i the accompanying drawing in which:

Fig; 1 is a side elevation of a frame for a back unit embodying myinvention;

Fig. 2 is a central section of an back unit;

Fig. 3 is a fragmental front elevation t aback unit frame; a

Fig. 4' is a horizontal section thereof;

Fig. 5 is a longitudinal section on the line 5-5 of Fig. 6, showing inaddition the back assembly; a

Fig. 6 is a fragmental plan of a seat unit showing the back-retainingmeans, and

Fig. 7 is an enlarged detailed view showing the means for securing theretaining bar and seat in position in the frame,

upholstered In the embodiment of the invention illustrated I provide apair of side plates 1 adapted to be secured to suitable standards andeach of these side plates is provided with an inwardly-facing socketportion 2 adapted toreceive the end of a cross bar 3, which cross barprovides means for connecting the side plates together, and a pivotalsupport for the tilting seat frame 4.

Each of the side plates 1 carries a back-supporting bracket 5 and eachof said brackets comprises a plate secured to one of the side plates asby a rivet 6 passing through the upper end of the bracket and the plateand bolts or rivets '7 and 8 placed at spaced points on the bracket.Either the bracket plate 5 or the side plate may be formed of elongatedapertures for the reception of the bolts 7 and 8 to provide for anadjustment of the angle of inclination of the back-supporting bracket.

Each bracket includes a rearwardly-extending portion- 9' terminating ina partly cylindrical portionIO as illustrated in Fi'g. 6, and it will benoted that these-partly'cylindrical portions face inwardly r A v The"back unit comprises a frame member 11 consisting of a sheetg'of: metalgenerally of rectangular form, and curved as illustrated; and providedwith aperipherally-extending bead 12 adjacent threeof its edges; Beyondthe bead portion 12 the said three edges of the sheet are formed toprovide a;- continuous outwardly-opening groove- 1 3, the portion ofthe. sheet inwhich groove 13 is formed terminating in shoulders 14 atthe bottom of the baclniand' the portion. of the bead at its'lowersendbeing.extended or projected'. to: form; afflange: or tongue: 1 5..

The fourth; edge of the: sheet. is: formed with a forwardlywpening.groove 16: and; adjacent eaclr. end of. the groove-the: sheet-II carriesan ear? 17,;one endzportion: 18: of which is free. This can ispreferably"- spot-welded. to: the sheet and ther fi'ee. end? portion: 16may be: bent free' of the .boarch. .ispositioned ,Withmits. lower edgesupportedrirr the: hook 19;. Compressible upholstering material 21, suchfor instance as hair or other padding, and preferably in sheet form, issupported on the cardboard sheet, a portion 22 of the material beingfolded over the upper edge of the cardboard and compressed between thecardboard sheet and the seat back. Likewise a portion 23 of the materialmay enter the cavity formed by the bead 12.

In this description and in certain of the claims appended hereto thematerial is referred to as fcardboard. It is to be understood, however,that any material which is relatively inexpensive, light, and which hassufficient stifiness to support the strip of upholstering material 21during the assembly of the back is to be considered the equivalent ofthe cardboard.

, A resilient bar 24 is secured to three edges of a generallyrectangular sheet 25 of covering material, preferably by having the edgeof the sheet rolled over the bar and secured to the back of the materialeither by stitching or otherwise. A rod. 26 is secured to the bottom orother edge of the upholstering material, and this rod may be positionedin the groove 16. After the positioning of the rod 26 the ends 18 of thecars 17 may be bent downwardly against the rod to retain the same in rodhas been assembled in the groove or recess,.

the extending lugs 15 are folded down to cover the rebent end of the rod24.

The assembled back unit is engagedwith the seat unit by entering thelower ends ofthe bead 12 in the cylindrical portions 10 of the brackets9 j and sliding the back unit downwardly in said portions until thehooks 30 secured onthe bead portions engage over the top edges of thecylindrical portions 10. This limits the downward movement of the backand also provides a covering for the raw edge of the curved portion 10of the bracket. The lower edge of the bracket and bead are covered by,cap members 31 which engage over the lower edges of the curved portions10 and the bead, as illustrated in Fig. '7, and these cap portions areprovided with lugs 32 through which extend the threaded ends 29, nutsbeing secured on the underside of the lugs 32 for drawing the bar 24snugly in position, and likewise holding the seat portion from'verticaldisplacement. j

The present application is a division'of. my oopending applicationSerial No. 598,231, filed March 11, 1932, for Theater chair. 7

I claim as my invention: 1

1. In a chair, a back comprising a sheet of metal of generallyrectangular formation, said sheet being formed with an outwardly openinggroove extending around three sides thereof, said groove terminating, atits opposite ends, in shoulders and a resilient bar positioned in saidgroove and provided at its opposite ends with abutments engageable withsaid shoulders tohold said barin place. 1

2. In a chair, a back comprising a sheet of metal of generallyrectangular formation, said sheet being formed with an outwardly openinggroove extending around three sides thereof, said groove terminating, atits opposite ends, in shoulders, a resilient bar positioned in saidgroove and provided at its opposite ends with abutments en-.

gageable with said shoulders to hold said bar in place, and a sheet offlexible covering material substantially coextensivein size with thesheet metal having a portion of its periphery secured to said bar.

3. In achair, a back comprising a sheet'of metal of. generallyrectangular formation, said sheet being formed with an outwardly openinggroove extending around three sides thereof, said groove terminating,atits opposite ends, in shoulders,,a resilient bar positioned in saidgrooveand provided at its. opposite ends'with abutmentsengageable withsaid shoulders to hold said bar in place, a groove formed in saidmetalsheet and extending along the fourth side thereof, a pair of spaced earssecured to said metal sheet adjacent said last-mentioned "groove, asheet of flexible covering material of generally rectangular "fora rodreceivable in said last-mentioned groove,

'20 the fourth'side of saidfflexible sheetbeingsecured r to said rod,said ears being adapted tobe bent into retaining relation with said rodto hold the same in position in said last-mentioned groove.

4. In a chair, a back comprising a sheet of metal of'generallyrectangular formation, said sheet being formed withan outwardly openingthereof, a pair of spaced-ears secured to said metal sheet adjacent saidlast-mentioned groove, a sheet of flexible covering material ofgenerally rectangular formation having three, sides secured to said barand a rod receivable in said :lastmentioned groove, the fourth side ofsaid flexible sheet being secured to said rod, said cars being adaptedto be bent into retaining relation'with said rod to hold the same inposition in said lastmentioned groove.

CHARLES c. ADELSPERGER.

